Question: The displacement d (in mm) of a piano wire as a function of the time t (in s) is given by d=4.0 sin 173t cos

The displacement d (in mm) of a piano wire as a function of the time t (in s) is given by

d=4.0sin173tcos173t.

How fast is the displacement changing when

t=3.0

ms?

The change in displacement is _______ mm/s when t=3.0 ms.

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